Cannot override landed cost distribution in landed cost line

[David Cormier]

Environment:
python 2.7 + openerp 7.0 + latest c2c-rd-addons from branch 7.0

1. Create a request for quotation
2. Add a purchase order line for any product with quantity: 5
3. Add a purchase order line for any product with quantity: 10
4. Create a landed cost line with the "Quantity" distribution type and amount = 1000
5. Update the totals and assess that the « Landed Costs from Order » field is calculated correctly:

Expected and actual results:
Line 1: 333$
Line 2: 666$

6. Edit the request for quotation and set the « Amount type » field of the landed cost line to « Absolute Value »
7. Update the totals and assess that the « Landed Costs from Order» field is not calculated correctly for both lines:

Expected:
Line 1: 1000 * line1.subtotal / (line1.subtotal + line2.subtotal)
Line 2: 1000 * line2.subtotal / (line1.subtotal + line2.subtotal)

Result:
Line 1: 1000 * line1.product_qty / (line1.product_qty + line2.product_qty)
Line 2: 1000 * line2.product_qty / (line1.product_qty + line2.product_qty)